Oxide-derived copper (Cu) catalysts often show significantly improved performance for carbon dioxide (CO₂) reduction reactions compared with metallic Cu. In this article, we summarize the recently reported methods for preparing oxide-derived Cu catalysts and discuss the current understanding of the reaction mechanisms, including the role of mixed oxidation states of copper, subsurface oxygen, local pH, and electrolyte. Finally, we share our thoughts about the current challenges for oxide-derived Cu catalysts and the potential solutions.

中文翻译：

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氧化物衍生的铜催化剂电化学还原CO ₂的最新进展

与金属铜相比，氧化物衍生的铜（Cu）催化剂通常表现出显着改善的二氧化碳（CO ₂）还原反应性能。在本文中，我们总结了最近报道的制备氧化物衍生的Cu催化剂的方法，并讨论了目前对反应机理的理解，包括铜的混合氧化态，地下氧，局部pH值和电解质的作用。最后，我们就氧化物衍生的Cu催化剂目前面临的挑战以及潜在的解决方案分享我们的想法。